SOLAR GEOENGINEERING – States findings of the Legislature and requests federal action.
House Joint Memorial 18 is a nonbinding memorial from the Idaho Legislature addressing what it describes as solar geoengineering activities, including solar radiation modification and stratospheric aerosol injection. The memorial states that such activities are being conducted by federal agencies, contractors, nonprofits, and private entities without public knowledge or consent, and it distinguishes these activities from ordinary weather modification such as cloud seeding. It frames the issue as one of public health, agricultural protection, environmental integrity, and state sovereignty over Idaho’s airspace.
Rather than changing Idaho statutes directly, the memorial urges Congress to enact federal restrictions on intentional atmospheric releases for solar geoengineering without Idaho’s approval. It calls for bans on unmarked aircraft, drones, balloons, or space-based platforms used for these purposes over Idaho, felony penalties and fines for unauthorized acts, and coordination among federal law enforcement, the Idaho Department of Environmental Quality, and state law enforcement. It also directs Idaho’s legislative leadership to transmit the memorial to federal officials and the state’s congressional delegation.
Because this is a joint memorial, it does not itself amend Idaho law or create new state regulatory authority. Its practical effect is to express the Legislature’s position and request federal action, while also signaling support for future state or federal restrictions on atmospheric interventions. The memorial references the Idaho Department of Environmental Quality and state airspace, but any enforcement regime, criminal penalties, or consent requirements would require separate legislation at the state or federal level.
The available vote history suggests the measure had meaningful support but was not unanimous, passing House Third Reading 39-27. The bill text itself is strongly supportive of the memorial’s premise and uses urgent, protective language about public health, agriculture, and sovereignty. No committee transcript is available, so the recorded sentiment is best characterized as generally favorable among supporters of the measure, with a substantial minority opposed or unconvinced.
The main point of contention is the underlying claim that solar geoengineering is occurring without public knowledge or consent and poses unknown harms to health, crops, ecosystems, and weather stability. Supporters emphasize state sovereignty, transparency, and precaution, while opponents are likely to question the factual basis, the scope of the alleged activities, and whether the issue warrants legislative action. Another likely area of dispute is the memorial’s call for felony penalties and broad bans on atmospheric activities, which could be viewed as overbroad or as reaching beyond Idaho’s direct authority.